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Slide Bearings for High Pressure Pump
Novotný, Marek ; Petr, Jiří (referee) ; Novotný, Pavel (advisor)
The goal of this diploma thesis is to design the journal bearings for high pressure diesel pump which is part of Common rail system from Motorpal Company. This producer is also submitter of this diploma thesis and as a result it is expecting the reduction of cost price and possible transfer to the diesel oil lubrication. Firstly, there is sum up of issues of high pressure pump by Motorpal. The next part of the thesis describes the journal bearings and its construction, tribology of the journal bearings and also the overview of the materials. These materials are currently being used for securing long time usage and do not require service maintenance during lifespan period. In the practical part there is applied the Multy Body System (MBS) approach with rigid bodies and after that there are used analytic relations, which however do not include impact of movement of the journal center during dynamic stress. The thesis concludes with a comparison of results of both calculations and determination of bearing parameters, which according to the calculations ensure an achievement of hydrodynamic lubrication.
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Application of Pressure Accumulator Injection System on CI Engine
Šiška, Adam ; Štěpánek, Karel (referee) ; Dundálek, Radim (advisor)
This master’s thesis deals with building the most modern injection systém Common-Rail for four-cylinder tractor diesel engine. The following application is a conversion from a obsolete system with inline injection pumps. Because the costs for this conversion must be minimized, that it is effort of minimal intervention in engine design. First this master’s thesis focuses on the theory of injection systems of diesel engines and related things and then the thesis shows the design conversion supported analytical calculations and FEM analysis of newly designed components.
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Optimization of Manufacturing and Assembling Technology of the Valve Bolt
Hrouzková, Andrea ; Zapletal, Josef (referee) ; Doležal, Pavel (advisor)
The thesis aimed to study the impact of manufacturing and assembly technology, the valve bolt fitted to diesel high pressure pump CP3 in the Bosch, which has been found to leak. As experimental material was chosen heat treated bolts M16x1,5 made of material 12 050th. Groups of samples were produced in two ranges hardness. Experimental determination of the optimum range of hardness was assessed on the basis of the results of the process of the screw and set the value of plastic deformation of the sealing surfaces of the parts. Experimental section also deals with the analysis of bearing surfaces on the pump and the components, after the screw process. To some extent, is observed as surface treatment
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Phosphate conversion coatings
Ševčíková, Barbora ; Trčka,, Josef (referee) ; Zmrzlý, Martin (advisor)
The main objective of the master’s thesis is to study the influence of phosphate coating structure on the mechanical properties of screw connection. The theoretical part describes the conventional phosphating process and it is followed by an analysis of current knowledge of phosphating technology. Experiments are carried out on screw valves mounted to a high pressure diesel pump by Bosch Diesel s.r.o., made of unalloyed carbon steel. To investigate the effect of the structure on the connection sealing, twelve kinds of phosphate coatings varying in one process parameter were prepared. The monitored parameters determining the phosphate structure are – type of phosphate and activation bath, its temperature and concentration and time of immersion. The sealing connection is examined during simulated assembly process by angle controlled tightening while measuring torque and permanent material deformation. Prepared layers are characterized by determination of weight per unit area and their structure observed by electron microscope.
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Robotized workplace for parts manipulation
Stief, Tomáš ; Kočiš, Petr (referee) ; Knoflíček, Radek (advisor)
The theoretic part of barchelor works solves the lay-out of the automatic robotized workplace for the handling the housings of the high-pressure pumps. The works includes both the calculation of the power consumption of the robotized workplace and the calculation of the realization costs and consequently the economic return. There is mentioned both the principle of the Common - Rail fuel injection system and its using in the recent Diesel engines. There is discussed both the mechanical stopper of the palette with the inclusion of the housings of the pumps and the automatic reloader of the blisters in the practical part of the barchelor works.
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Use of WJM/AWJ Method in a Firm
Strnad, Pavel ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
Assessment of the use of technology of machining material by unconventional method for cutting using abrasive waterjet in engineering company. The possibilities of this technology with respect to its technological possibilities and limits. Demonstration of basic capabilities and behavior of this method when cutting the samples of stainless steel. The assessment and analysis of the executed tests.
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Injection Systems of Commercial Vehicles
Horníček, Petr ; Prokop, Aleš (referee) ; Dundálek, Radim (advisor)
In this thesis I describe the fuel system components and their function. Furthermore, there is an overview of the most commonly used injection systems with the principle of operation, advantages and disadvantages of the embodiment. There is also processed the issue of the emission standards. This thesis contains a list of the world's leading manufacturers of commercial vehicles and their injection systems. Finally there is a reflection on the future development of injection systems.
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Optimalization of machining processes in production of CP4 flanges
Švaříček, Petr ; Prokop, Jaroslav (referee) ; Humár, Anton (advisor)
The main objective of the bachelor thesis is to review actual status of tooling process of flange CP4 made by aluminum alloy for high pressure pump of system Common Rail in certain conditions of Bosch Diesel, s.r.o. in Jihlava. Special attention is drawn to consideration of production requirements and quality level maintenance. The thesis aims to propose a new technology of tooling and to review its effectiveness.
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Petrol Direct Injetion - Injection System of Future?
Smilek, Lukáš ; Svída, David (referee) ; Dundálek, Radim (advisor)
This thesis deals with petrol direct injection system in combustion engines. It introduces the key parts of injection system, describes the construction and function of each part, same as declares advantages and disadvantages in confrontation with older way of injection. This work introduces also summary of engines with the petrol direct injection system.
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